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Unformatted text preview: madding (cmm3632) – HW04 – markert – (56475) 1 This printout should have 15 questions. Multiplechoice questions may continue on the next column or page – find all choices before answering. 001 (part 1 of 2) 10.0 points A light, inextensible cord passes over a light, frictionless pulley with a radius of 7 . 3 cm. It has a(n) 16 kg mass on the left and a(n) 9 . 5 kg mass on the right, both hanging freely. Initially their center of masses are a vertical distance 2 . 6 m apart. The acceleration of gravity is 9 . 8 m / s 2 . 2 . 6 m 7 . 3 cm ω 16 kg 9 . 5 kg At what rate are the two masses accelerat ing when they pass each other? Answer in units of m / s 2 . 002 (part 2 of 2) 10.0 points What is the tension in the cord when they pass each other? Answer in units of N. 003 10.0 points A force F = 81 . 2 N acts at an angle α = 32 ◦ with respect to the horizontal on a block of mass m = 25 kg, which is at rest on a horizontal plane. The acceleration of gravity is 9 . 81 m / s 2 . If the static frictional coefficient is μ s = . 84, what is the force of static friction? 25 kg μ s = 0 . 84 8 1 . 2 N 32 ◦ 1. 148 . 166 N 2. 206 . 01 N 3. 0 N 4. 57 . 8437 N 5. 242 . 155 N 6. 43 . 0294 N 7. 169 . 865 N 8. 263 . 854 N 9. 36 . 1447 N 10. 68...
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 Spring '08
 wandelt
 Chemistry, pH, Force, Friction, Mass, kg, m/s2

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